dodging to pay out third partie claim

My wife had a car accident which she collided to third parties vehicle, she took full responsibility as she was at the wrong, we submitted a claim and MiWay send out anaassessor to our home and towed our vehicle for assessment the the claim was approved and car was fixed but now MiWay is trying to dodging to pay or approve the third parties by doing a repetition of processes and requesting same documents over and over, and declined the claim on negligence, while the assessor for our car clearlystated that the breaks and tired were and sstill in condition, to add to that we only use specialist when it comes yo our cars , we used hi-q to replace the brakes and our cats are serviced at the dealet , so what negligence are you talking about. We have comprehensive insurance yo assist us when accident happens not to be played <br> As fulls as wwe are not legal specialist, if it was negligence then why did away approve the primary claim for our car then......stop playing us and serve us accordingly as we pay our premium monthly. Thank you